It was reported that during a cryoablation involving a polarx catheter and polarsheath.
During preparation outside the patient the light blue cap of the first polarsheath handle became detached, and was therefore replaced prior to insertion into the body.
During the procedure with the second polarsheath.
After inserting the polarx catheter into the sheath, the physician tried to remove the air by pulling the syringe attached to the side port, and noticed that the action induced air.
The physician noticed a st segment elevation and a shadow in left atrium 16 minutes after transseptal procedure.
The second polarsheath sheath was then also exchanged.
At that time, the outer balloon pressure (obp) value increased all throughout.
After cooling the left superior pulmonary vein, the pressure continued to increase and an error (1-00000020-2 outer balloon pressure too high) occurred.
The cryo cable were disconnected then reconnected, however, the pressure remained high.
The cable was exchanged twice and the catheter was also exchanged.
During the new catheter preparation, its obp value kept increasing and reconnection didn't resolve the issue.
The catheter was exchanged again for catheter of another model, then the obp value stabilized.
The procedure was completed with no additional complications.
This product is part of the (b)(4) advisory population for the polarsheath steerable sheath.
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